netfilter: xtables: move extension arguments into compound structure (2/6)

This patch does this for match extensions' checkentry functions.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>

1 files changed, 22 insertions, 10 deletions

diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index bcd40ec83257..763a704ce83f 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -193,6 +193,25 @@ struct xt_match_param {
         bool *hotdrop;
 };
 
+/**
+ * struct xt_mtchk_param - parameters for match extensions'
+ * checkentry functions
+ *
+ * @table:      table the rule is tried to be inserted into
+ * @entryinfo:  the family-specific rule data
+ *              (struct ipt_ip, ip6t_ip, ebt_entry)
+ * @match:      struct xt_match through which this function was invoked
+ * @matchinfo:  per-match data
+ * @hook_mask:  via which hooks the new rule is reachable
+ */
+struct xt_mtchk_param {
+        const char *table;
+        const void *entryinfo;
+        const struct xt_match *match;
+        void *matchinfo;
+        unsigned int hook_mask;
+};
+
 struct xt_match
 {
         struct list_head list;
@@ -208,12 +227,7 @@ struct xt_match
                       const struct xt_match_param *);
 
         /* Called when user tries to insert an entry of this type. */
-        /* Should return true or false. */
-        bool (*checkentry)(const char *tablename,
-                           const void *ip,
-                           const struct xt_match *match,
-                           void *matchinfo,
-                           unsigned int hook_mask);
+        bool (*checkentry)(const struct xt_mtchk_param *);
 
         /* Called when entry of this type deleted. */
         void (*destroy)(const struct xt_match *match, void *matchinfo);
@@ -342,10 +356,8 @@ extern void xt_unregister_match(struct xt_match *target);
 extern int xt_register_matches(struct xt_match *match, unsigned int n);
 extern void xt_unregister_matches(struct xt_match *match, unsigned int n);
 
-extern int xt_check_match(const struct xt_match *match, unsigned short family,
-                          unsigned int size, const char *table, unsigned int hook,
-                          unsigned short proto, int inv_proto,
-                          const void *entry, void *matchinfo);
+extern int xt_check_match(struct xt_mtchk_param *, u_int8_t family,
+                          unsigned int size, u_int8_t proto, bool inv_proto);
 extern int xt_check_target(const struct xt_target *target, unsigned short family,
                            unsigned int size, const char *table, unsigned int hook,
                            unsigned short proto, int inv_proto,